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Table S1 Weedy rice (Oryza sativa f. spontanea) biotypes and cultivated rice (Oryza sativa) lines used for the production of crop–weed hybrids [Correction made after online publication 5 September 2013. Table S1 substituted for a version which explains the difference between EP3 and Minghui-86, and which illustrates that the transgenic EP3 produced more tillers than the control in a pilot experiment.]

Table S2 Methodology for measuring the fitness-related traits

Table S3 Effects of the epsps transgene on fitness-related traits in F1 and F2 crop–weed hybrids (WH1–WH4) from four biotypes of weedy rice (Oryza sativa f. spontanea) (W1–W4)